1The police are searching for the killer of the young woman who was found dead in the park.
2Do you think the new movie about a serial killer will be a hit at the box office?
3The heatwave has been a killer for the crops in the region, causing widespread damage.
4Be careful when handling the new killer bee species, as they can be very aggressive.
5The company's new product is a killer in the market, outselling all its competitors.